American College of Physicians, Annals of Internal Medicine, 7(161), p. 534
DOI: 10.7326/l14-5019-7
American College of Physicians, Annals of Internal Medicine, 7(161), p. 533
DOI: 10.7326/l14-5019-4
American College of Physicians, Annals of Internal Medicine, 7(161), p. 533
DOI: 10.7326/l14-5019-5
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